xinyiZzz commented on pull request #7198:
URL: https://github.com/apache/incubator-doris/pull/7198#issuecomment-988713461


   > Why does this parameter 'untracked_mem_limit_mbytes' affect performance? 
What is your data and table meta?
   
   Because compared to the previous only consume/release MemTracker for large 
memory, the consume/release frequency in TCMalloc Hook will be much higher.
   This parameter has been renamed to `mem_tracker_consume_min_size_mbytes`, 
the comment is clearer


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